Disclosure: Purgo Labs is our affiliate partner; we earn nothing from Behemoth Labz. Scores come from the public rubric, which has no partnership input.
Research use only. Compound Review scores vendors on documentation — laboratory certificates, lot records, pricing and company identity. Nothing on this page is guidance on human or veterinary use, dosing or health outcomes.
01
Where each vendor is stronger
Computed from the rubric, prices and review record — never curated
Purgo Labs
Names its testing laboratory — SteriGenix and Freedom Diagnostics named per lot
Certificates verifiable at the lab, not just the vendor — Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
Batch-specific COAs matched to lots — Lot numbers (e.g. PL-BPC-05) with test dates per batch
Publishes measured net content vs label — Measured net peptide published per lot (e.g. BPC-157 lot PL-BPC-05: 11.16mg vs 10mg label)
No contradictions among its own claims — No contradictions found across site claims (checked Aug 2026)
Vial sizes stated with prices — Product pages state vial size with price (e.g. BPC-157 10mg at $44.99; 24 dated size+price readings on record)
Publishes a legal entity and street address — PurgoLabs LLC (Arizona) · 10105 E Via Linda St Bld 103, Scottsdale, AZ — on-site (6 Sep 2026)
No compound-and-size pair with dated prices from both vendors yet. Each vendor's readings are on the price index.
04
What we found at Behemoth Labz
Read 6 September 2026 on the vendor's own pages
Behemoth Labz is, by its own About page, not a peptide vendor any more — it is a content site that sends you to other sellers, still wearing the shell of the store it used to be. Nothing in the testing story can be checked, and the 220 reviews describe a business that the site says no longer sells. If you arrive here looking for BPC-157, you will be handed to a vendor we have not evaluated.
Checks out
✓3.7 across 220 Trustpilot reviews on a claimed profile (read 6 Sep 2026). source
✓A legacy TB-500 listing shows 5mg and 10mg with a $52.49–$105.00 range (page shows 'Coming soon', no add-to-cart). source
✓Phone number published on the Contact page. source
Could not verify · flags
?Whether Behemoth Labz sells anything. About and Contact say, verbatim, 'BehemothLabz does not sell or directly supply the products featured on this website' and 'We do not manufacture, stock, package, ship, or fulfill orders' — while the Terms and older listings read as a seller's.
?Any laboratory, certificate or lot lookup — the Quality Control page describes a testing program in detail and names no lab; no certificate was found.
?Who runs it — no legal entity or address on any page.
?Basket prices — the BPC-157, NAD+ and retatrutide pages are $0.00 content pages that link out to other sellers with affiliate codes.
!'Does not sell or directly supply' (About, Contact) vs. first-person seller language in the Terms and priced product listings.
!The Quality Control page describes Behemoth quarantining raw materials and sending composite samples to a lab — a manufacturer's process — on a site that says it does not manufacture or stock anything.
!The BPC-157 page carries affiliate links and discount codes for four other sellers (Improved Peptides, American Peptides, Purity Peptides, Apollo). Buying 'from Behemoth' means buying from someone else we have not scored.
!SARMs and prohormones are a major part of the catalog.
!3.7 is the weakest Trustpilot rating we cover at 200+ reviews.
No legal entity or address published · (888) 830-3517
2026-09-063/10 — re-issued under rubric v2 (was 2/8); not awarded: named-lab, lab-hosted, per-lot, net-content, claims-consistent, sized-pricing, identity
Purgo Labs: the caveat
Smaller independent review base than several competitors (80 reviews). The catalog is peptide-focused, so researchers also working with SARMs or broader research chemicals will need a second supplier.
Behemoth Labz: the caveat
The About and Contact pages say 'BehemothLabz does not sell or directly supply the products featured on this website'; several product pages are $0.00 content pages linking out to other sellers with affiliate codes, while older listings still show prices. No laboratory named despite 'third-party tested' claims; no certificate or lot lookup found. No legal entity or address. SARMs and prohormones are a major part of the catalog.
07
Where the evidence points
Where the evidence points
Purgo Labs 10/10
We earn nothing from Behemoth Labz. Purgo Labs holds every rubric point — certificates checkable at the lab, measured net content per lot — with a live, independent review record.
Purgo Labs, on the evidence: 10/10 rubric points against 3/10. Behemoth Labz is stronger on 3 points listed below. Every point is a fact you can check on either vendor's site; both are scored by the same published rubric.
Is Behemoth Labz legit?
Behemoth Labz scores 3/10 on our rubric, has an independently viewable rating of 3.7 (220 reviews), and does not name its testing laboratory. Caveat: The About and Contact pages say 'BehemothLabz does not sell or directly supply the products featured on this website'; several product pages are $0.00 content pages linking out to other sellers with affiliate codes, while older listings still show prices. No laboratory named despite 'third-party tested' claims; no certificate or lot lookup found. No legal entity or address. SARMs and prohormones are a major part of the catalog.
Which is cheaper, Purgo Labs or Behemoth Labz?
We do not yet have a like-for-like price pair for these two vendors; the Peptide Price Index has each vendor's dated readings.
Do you earn money from either vendor?
Purgo Labs is our affiliate partner and we earn a commission on referred orders; we earn nothing from Behemoth Labz. Scores come from the rubric, which has no partnership input, and the ordering rule on our scoreboard is disclosed.